`(sin 3x + sin x ) sin x + (cos 3x - cos x) cos x =0`

Prove that = (sin 5x - 2 sin 3 x + sin x)/( cos 5x - cos x) = tan x

sin 2x + cos x =0

(sin x + sin 3x )/( cos x + cos 3x )= tan 2x

Find the general solution of sin x-3 sin 2x+ sin 3x= cos x - 3 cos 2x + cos 3x.

Show that the general solution of sin x- 3 sin 2x+sin 3x= cos x-3 cos 2x+ cos 3x " is " ( n pi)/(2)+ (pi)/(8) , where n is any integer.

int sin x sin (cos x)dx

((sin 7x + sin 5x ) +(sin 9x + sin 3x))/( (cos 7x + cos 5x ) + (cos 9x + cos 3x ))= tan 6x

sin3x + sinx = cos6x + cos4x

sin 3x + sin 2x - sinx = 4sin x cos "" x/2 cos "" (3x)/(2)

cos 4x = sin 3x